We set up in a small bar last night and I had an obnoxious buzz coming through my amp. I couldn't get it under control and it was very annoying.
I could stand at a certain angle to my amp and control it better but it was a real hassle doing that and rolling vol pot up and down.
I was totally stumped. Tried different cables different AC outlets shutting off lights going direct to amp. Different guitar. Oh and it was only with guitar volume up. With volume 3/4 or lower my gate would keep it at bay.
There was something in that building causing the buzz. Any suggestion at all from the experts?